xiaoxiang781216 commented on code in PR #17826:
URL: https://github.com/apache/nuttx/pull/17826#discussion_r2680712092
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libs/libxx/libcxxabi/Make.defs:
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@@ -51,6 +53,9 @@ ifeq ($(CONFIG_LIBCXXABI), y)
CXXFLAGS += ${DEFINE_PREFIX}LIBCXX_BUILDING_LIBCXXABI
CXXFLAGS += -I $(TOPDIR)/libs/libxx/libcxxabi/libcxxabi/include
+# Define _LIBCPP_HAS_NO_THREADS for no-threading builds
+CXXFLAGS += ${DEFINE_PREFIX}_LIBCPP_HAS_NO_THREADS
Review Comment:
but we need support thread before merging this pr
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arch/arm/src/cmake/gcc.cmake:
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@@ -274,6 +274,11 @@ if(NOT CONFIG_CXX_RTTI)
add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>)
endif()
+# Add -mlong-calls for C++ when using libcxx to fix relocation issues
+if(CONFIG_LIBCXX)
+ add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-mlong-calls>)
Review Comment:
do you hit this problem when generate elf binary
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